In geometry, a pentagon (from the Greek πέντε pente and γωνία gonia, meaning five and angle) is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or self-intersecting. A self-intersecting regular pentagon (or star pentagon) is called a pentagram.Click to see full answer. People also ask, what is the name of a 5 sided polygon called? More than Four Sides A five-sided shape is called a pentagon. A six-sided shape is a hexagon, a seven-sided shape a heptagon, while an octagon has eight sides… There are names for many different types of polygons, and usually the number of sides is more important than the name of the shape.Also, what is a polygon with 10 sides called? In geometry, a decagon is a ten-sided polygon or 10-gon. Herein, what is a 12 sided polygon called? Convex, cyclic, equilateral, isogonal, isotoxal. In geometry, a dodecagon or 12-gon is any twelve-sided polygon.Is Star a polygon?Yes, a star is a polygon. In geometry, a star is a special type of polygon that we call a star polygon. These types of polygons take on the general
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